Class Information
Number: 171/9
Name: Unearthing plants or buried objects > Support overload release and reset; drive overload relief; or automatic control
Description: Apparatus in which means is provided (1) which includes a frangible, frictional or resilient member or connection in the mounting of the recovery device, or a portion thereof, said member normally holding the recovery device, or a portion thereof in its normal working position until an abnormal condition arises, which overloads the device or said portion thereof and breaks the frangible element or overcomes the frictional or resilient force, thereby permitting the device or said portion thereof to move to a nonoverloaded position and there remain until manually reset, (2) in the power transmission for the device, or portions thereof, including a resilient, frictional or frangible member or connection adapted to yield or break when the device, or a portion thereof, is subjected to an abnormal operating condition whereby the drive to the recovering device is momentarily interrupted or positively disengaged; or (3) to sense a condition which may or not may occur and respond to such condition by causing an operation of the recovery device to occur only when said condition exists.
Patents under this class:
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